<?xml version="1.0" encoding="UTF-8"?>
<ItemsList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Item xsi:type="ItemWithNumber">
<Name>Name1</Name>
<Number>20</Number>
</Item>
<Item xsi:type="ItemWithNumber">
<Name>Name1</Name>
<Name>Name2</Name>
<Number>20</Number>
</Item>
</ItemsList>